| 订阅 | 在线投稿
分享
 
 
 

Oracle数据库维护常用SQL语句集合(3)

2008-07-04 06:34:30 编辑來源:互联网 国际版 评论
 
 
本文为【Oracle数据库维护常用SQL语句集合(3)】的汉字拼音对照版显示拼音
  xingnengxiangguanneirong

  1buzhuoyunxinghenjiudeSQL

  column username format a12

  column opname format a16

  column progress format a8

  SELECT Username, Sid, Opname,

  Round(Sofar * 100 / Totalwork, 0) || '%' AS Progress, Time_Remaining,

  Sql_Text

  FROM V$session_Longops, V$sql

  WHERE Time_Remaining <> 0

  AND Sql_Address = Address

  AND Sql_Hash_Value = Hash_Value;

  2qiuDISK READjiaoduodeSQL

  SELECT St.Sql_Text

  FROM V$sql s, V$sqltext St

  WHERE s.Address = St.Address

  AND s.Hash_Value = St.Hash_Value

  AND s.Disk_Reads > 300;

  3qiuDISK SORTyanchongdeSQL

  SELECT Sess.Username, SQL.Sql_Text, Sort1.Blocks

  FROM V$session Sess, V$sqlarea SQL, V$sort_Usage Sort1

  WHERE Sess.Serial# = Sort1.Session_Num

  AND Sort1.Sqladdr = SQL.Address

  AND Sort1.Sqlhash = SQL.Hash_Value

  AND Sort1.Blocks > 200;

  4jiankongsuoyinshifou使shiyong

  alter index &index_name monitoring usage;

  alter index &index_name nomonitoring usage;

  select * from v$object_usage where index_name = &index_name;

  5qiushujuwenjiandeI/Ofenbu

  SELECT Df.NAME, Phyrds, Phywrts, Phyblkrd, Phyblkwrt, Singleblkrds, Readtim,

  Writetim

  FROM V$filestat Fs, V$dbfile Df

  WHERE Fs.File# = Df.File#

  ORDER BY Df.NAME;

  6chakanhuanmeitijiaodeshiwu

  select * from v$locked_object;

  select * from v$transaction;

  7huigunduanchakan

  SELECT Rownum, Sys.Dba_Rollback_Segs.Segment_Name NAME,

  V$rollstat.Extents Extents, V$rollstat.Rssize Size_In_Bytes,

  V$rollstat.Xacts Xacts, V$rollstat.Gets Gets, V$rollstat.Waits Waits,

  V$rollstat.Writes Writes, Sys.Dba_Rollback_Segs.Status Status

  FROM V$rollstat, Sys.Dba_Rollback_Segs, V$rollname

  WHERE V$rollname.NAME(+) = Sys.Dba_Rollback_Segs.Segment_Name

  AND V$rollstat.Usn(+) = V$rollname.Usn

  ORDER BY Rownum

  8chakanxitongqingqiuqingkuang

  SELECT Decode(NAME, 'summed dirty write queue length', VALUE) /

  Decode(NAME, 'write requests', VALUE) "Write Request Length"

  FROM V$sysstat

  WHERE NAME IN ('summed dirty queue length', 'write requests')

  AND VALUE > 0;

  9jisuandata buffer mingzhonglv

  SELECT a.VALUE + b.VALUE "logical_reads", c.VALUE "phys_reads",

  Round(100 * ((a.VALUE + b.VALUE) - c.VALUE) / (a.VALUE + b.VALUE)) "BUFFER HIT RATIO"

  FROM V$sysstat a, V$sysstat b, V$sysstat c

  WHERE a.Statistic# = 40

  AND b.Statistic# = 41

  AND c.Statistic# = 42;

  SELECT NAME,

  (1 - (Physical_Reads / (Db_Block_Gets + Consistent_Gets))) * 100 h_Ratio

  FROM V$buffer_Pool_Statistics;

  10chakanneicun使shiyongqingkuang

  SELECT Least(MAX(b.VALUE) / (1024 * 1024), SUM(a.Bytes) / (1024 * 1024)) Shared_Pool_Used,

  MAX(b.VALUE) / (1024 * 1024) Shared_Pool_Size,

  Greatest(MAX(b.VALUE) / (1024 * 1024), SUM(a.Bytes) / (1024 * 1024)) -

  (SUM(a.Bytes) / (1024 * 1024)) Shared_Pool_Avail,

  ((SUM(a.Bytes) / (1024 * 1024)) / (MAX(b.VALUE) / (1024 * 1024))) * 100 Avail_Pool_Pct

  FROM V$sgastat a, V$parameter b

  WHERE (a.Pool = 'shared pool' AND a.NAME NOT IN ('free memory'))

  AND b.NAME = 'shared_pool_size';

  11chakanyonghu使shiyongneicunqingkuang

  SELECT Username, SUM(Sharable_Mem), SUM(Persistent_Mem), SUM(Runtime_Mem)

  FROM Sys.v_$sqlarea a, Dba_Users b

  WHERE a.Parsing_User_Id = b.User_Id

  GROUP BY Username;

  12chakanduixiangdehuancunqingkuang

  SELECT Owner, Namespace, TYPE, NAME, Sharable_Mem, Loads, Executions, Locks,

  Pins, Kept

  FROM V$db_Object_Cache

  WHERE TYPE NOT IN

  ('NOT LOADED', 'NON-EXISTENT', 'VIEW', 'TABLE', 'SEQUENCE')

  AND Executions > 0

  AND Loads > 1

  AND Kept = 'NO'

  ORDER BY Owner, Namespace, TYPE, Executions DESC;

  SELECT TYPE, COUNT(*)

  FROM V$db_Object_Cache

  GROUP BY TYPE;

  13chakankuhuancunmingzhonglv

  SELECT Namespace, Gets, Gethitratio * 100 Gethitratio, Pins,

  Pinhitratio * 100 Pinhitratio, Reloads, Invalidations

  FROM V$librarycache

  14chakanmouxieyonghudehash

  SELECT a.Username, COUNT(b.Hash_Value) Total_Hash,

  COUNT(b.Hash_Value) - COUNT(UNIQUE(b.Hash_Value)) Same_Hash,

  (COUNT(UNIQUE(b.Hash_Value)) / COUNT(b.Hash_Value)) * 100 u_Hash_Ratio

  FROM Dba_Users a, V$sqlarea b

  WHERE a.User_Id = b.Parsing_User_Id

  GROUP BY a.Username;

  15chakanzidianmingzhonglv

  SELECT (SUM(Getmisses) / SUM(Gets)) Ratio

  FROM V$rowcache;

  16chakanundoduande使shiyongqingkuang

  SELECT d.Segment_Name, Extents, Optsize, Shrinks, Aveshrink, Aveactive,

  d.Status

  FROM V$rollname n, V$rollstat s, Dba_Rollback_Segs d

  WHERE d.Segment_Id = n.Usn(+)

  AND d.Segment_Id = s.Usn(+);

  

  17qiuguidangrizhideqiehuanpinlv(shengchanxitongkenengshijianhuihenchang)

  SELECT Start_Recid, Start_Time, End_Recid, End_Time, Minutes

  FROM (SELECT Test.*, Rownum AS Rn

  FROM (SELECT b.Recid Start_Recid,

  To_Char(b.First_Time, 'yyyy-mm-dd hh24:mi:ss') Start_Time,

  a.Recid End_Recid,

  To_Char(a.First_Time, 'yyyy-mm-dd hh24:mi:ss') End_Time,

  Round(((a.First_Time - b.First_Time) * 24) * 60, 2) Minutes

  FROM V$log_History a, V$log_History b

  WHERE a.Recid = b.Recid + 1

  AND b.First_Time > SYSDATE - 1

  ORDER BY a.First_Time DESC) Test) y

  WHERE y.Rn < 30

  18qiuhuigunduanzhengzaichulideshiwu

  SELECT a.NAME, b.Xacts, c.Sid, c.Serial#, d.Sql_Text

  FROM V$rollname a, V$rollstat b, V$session c, V$sqltext d, V$transaction e

  WHERE a.Usn = b.Usn

  AND b.Usn = e.Xidusn

  AND c.Taddr = e.Addr

  AND c.Sql_Address = d.Address

  AND c.Sql_Hash_Value = d.Hash_Value

  ORDER BY a.NAME, c.Sid, d.Piece;

  19qiumougeshiwudechongzuoxinxi(bytes)

  SELECT s.NAME, m.VALUE

  FROM V$mystat m, V$statname s

  WHERE m.Statistic# = s.Statistic#

  AND s.NAME LIKE '%redo size%';

  20qiucachezhonghuancunchaoguoqi5%deduixiang

  SELECT o.Owner, o.Object_Type, o.Object_Name, COUNT(b.Objd)

  FROM V$bh b, Dba_Objects o

  WHERE b.Objd = o.Object_Id

  GROUP BY o.Owner, o.Object_Type, o.Object_Name

  HAVING COUNT(b.Objd) > (SELECT To_Number(VALUE) * 0.05

  FROM V$parameter

  WHERE NAME = 'db_block_buffers');

  21qiubuffer cachezhongdekuaixinxi

  SELECT o.Object_Type, Substr(o.Object_Name, 1, 10) Objname, b.Objd, b.Status,

  COUNT(b.Objd)

  FROM V$bh b, Dba_Objects o

  WHERE b.Objd = o.Data_Object_Id

  AND o.Owner = '&owner'

  GROUP BY o.Object_Type, o.Object_Name, b.Objd, b.Status;

  22qiurizhiwenjiandekongjian使shiyong

  SELECT Le.Leseq Current_Log_Sequence#,

  100 * Cp.Cpodr_Bno / Le.Lesiz Percentage_Full

  FROM X$kcccp Cp, X$kccle Le

  WHERE Le.Leseq = Cp.Cpodr_Seq;

  23qiudengdaizhongdeduixiang

  SELECT /*+rule */

  s.Sid, s.Username, w.Event, o.Owner, o.Segment_Name, o.Segment_Type,

  o.Partition_Name, w.Seconds_In_Wait Seconds, w.State

  FROM V$session_Wait w, V$session s, Dba_Extents o

  WHERE w.Event IN (SELECT NAME

  FROM V$event_Name

  WHERE Parameter1 = 'file#'

  AND Parameter2 = 'block#'

  AND NAME NOT LIKE 'control%')

  AND o.Owner <> 'sys'

  AND w.Sid = s.Sid

  AND w.P1 = o.File_Id

  AND w.P2 >= o.Block_Id

  AND w.P2 < o.Block_Id + o.Blocks

  24qiudangqianshiwudechongzuochicun

  SELECT V$statname.NAME,VALUE

  FROM V$mystat, V$statname

  WHERE V$mystat.Statistic# = V$statname.Statistic#

  AND V$statname.NAME = 'redo size';

  25huanxingsmonquqingchulinshiduan

  column pid new_value Smon

  set termout off

  SELECT p.Pid

  FROM Sys.v_$bgprocess b, Sys.v_$process p

  WHERE b.NAME = 'SMON'

  AND p.Addr = b.Paddr;

  /

  SET Termout ON Oradebug Wakeup &Smon Undefine Smon

  26qiuhui退tuilv

  SELECT b.VALUE / (a.VALUE + b.VALUE), a.VALUE, b.VALUE

  FROM V$sysstat a, V$sysstat b

  WHERE a.Statistic# = 4

  AND b.Statistic# = 5;

  27qiufree memory

  SELECT *

  FROM V$sgastat

  WHERE NAME = 'free memory';

  SELECT a.NAME, SUM(b.VALUE)

  FROM V$statname a, V$sesstat b

  WHERE a.Statistic# = b.Statistic#

  GROUP BY a.NAME;

  chakanyixiashuizai使shiyongnagekeyidehuigunduanhuozhechakanyixiamougekeyideyonghuzai使shiyonghuigunduan

  zhaochulinghuigunduanbuduanzengchangdeshiwuzaikankanruhechulitashifoukeyijiangtacommitzaibuxing

  jiukankannengfoukilltadengdeng, chakandangqianzhengzai使shiyongdehuigunduandeyonghuxinxihehuigunduanxinxi:

  set linesize 121

  SELECT r.NAME "ROLLBACK SEGMENT NAME ", l.Sid "ORACLE PID",

  p.Spid "SYSTEM PID ", s.Username "ORACLE USERNAME"

  FROM V$lock l, V$process p, V$rollname r, V$session s

  WHERE l.Sid = p.Pid(+)

  AND s.Sid = l.Sid

  AND Trunc(l.Id1(+) / 65536) = r.Usn

  AND l.TYPE(+) = 'TX'

  AND l.Lmode(+) = 6

  ORDER BY r.NAME;

  28chakanyonghudehuigunduandexinxi

  SELECT s.Username, Rn.NAME

  FROM V$session s, V$transaction t, V$rollstat r, V$rollname Rn

  WHERE s.Saddr = t.Ses_Addr

  AND t.Xidusn = r.Usn

  AND r.Usn = Rn.Usn

  29chakanneicunzhongcunde使shiyong

  SELECT Decode(Greatest(CLASS, 10),

  10,

  Decode(CLASS, 1, 'Data', 2, 'Sort', 4, 'Header', To_Char(CLASS)), 'Rollback') "Class",

  SUM(Decode(Bitand(Flag, 1), 1, 0, 1)) "Not Dirty",

  SUM(Decode(Bitand(Flag, 1), 1, 1, 0)) "Dirty",

  SUM(Dirty_Queue) "On Dirty", COUNT(*) "Total"

  FROM X$bh

  GROUP BY Decode(Greatest(CLASS, 10),

  10,

  Decode(CLASS, 1, 'Data', 2, 'Sort', 4, 'Header', To_Char(CLASS)), 'Rollback');原文
 
 
性能相关内容 1、捕捉运行很久的SQL column username format a12 column opname format a16 column progress format a8 SELECT Username, Sid, Opname, Round(Sofar * 100 / Totalwork, 0) || '%' AS Progress, Time_Remaining, Sql_Text FROM V$session_Longops, V$sql WHERE Time_Remaining <> 0 AND Sql_Address = Address AND Sql_Hash_Value = Hash_Value; 2、求DISK READ较多的SQL SELECT St.Sql_Text FROM V$sql s, V$sqltext St WHERE s.Address = St.Address AND s.Hash_Value = St.Hash_Value AND s.Disk_Reads > 300; 3、求DISK SORT严重的SQL SELECT Sess.Username, SQL.Sql_Text, Sort1.Blocks FROM V$session Sess, V$sqlarea SQL, V$sort_Usage Sort1 WHERE Sess.Serial# = Sort1.Session_Num AND Sort1.Sqladdr = SQL.Address AND Sort1.Sqlhash = SQL.Hash_Value AND Sort1.Blocks > 200; 4、监控索引是否使用 alter index &index_name monitoring usage; alter index &index_name nomonitoring usage; select * from v$object_usage where index_name = &index_name; 5、求数据文件的I/O分布 SELECT Df.NAME, Phyrds, Phywrts, Phyblkrd, Phyblkwrt, Singleblkrds, Readtim, Writetim FROM V$filestat Fs, V$dbfile Df WHERE Fs.File# = Df.File# ORDER BY Df.NAME; 6、查看还没提交的事务 select * from v$locked_object; select * from v$transaction; 7、回滚段查看 SELECT Rownum, Sys.Dba_Rollback_Segs.Segment_Name NAME, V$rollstat.Extents Extents, V$rollstat.Rssize Size_In_Bytes, V$rollstat.Xacts Xacts, V$rollstat.Gets Gets, V$rollstat.Waits Waits, V$rollstat.Writes Writes, Sys.Dba_Rollback_Segs.Status Status FROM V$rollstat, Sys.Dba_Rollback_Segs, V$rollname WHERE V$rollname.NAME(+) = Sys.Dba_Rollback_Segs.Segment_Name AND V$rollstat.Usn(+) = V$rollname.Usn ORDER BY Rownum 8、查看系统请求情况 SELECT Decode(NAME, 'summed dirty write queue length', VALUE) / Decode(NAME, 'write requests', VALUE) "Write Request Length" FROM V$sysstat WHERE NAME IN ('summed dirty queue length', 'write requests') AND VALUE > 0; 9、计算data buffer 命中率 SELECT a.VALUE + b.VALUE "logical_reads", c.VALUE "phys_reads", Round(100 * ((a.VALUE + b.VALUE) - c.VALUE) / (a.VALUE + b.VALUE)) "BUFFER HIT RATIO" FROM V$sysstat a, V$sysstat b, V$sysstat c WHERE a.Statistic# = 40 AND b.Statistic# = 41 AND c.Statistic# = 42; SELECT NAME, (1 - (Physical_Reads / (Db_Block_Gets + Consistent_Gets))) * 100 h_Ratio FROM V$buffer_Pool_Statistics; 10、查看内存使用情况 SELECT Least(MAX(b.VALUE) / (1024 * 1024), SUM(a.Bytes) / (1024 * 1024)) Shared_Pool_Used, MAX(b.VALUE) / (1024 * 1024) Shared_Pool_Size, Greatest(MAX(b.VALUE) / (1024 * 1024), SUM(a.Bytes) / (1024 * 1024)) - (SUM(a.Bytes) / (1024 * 1024)) Shared_Pool_Avail, ((SUM(a.Bytes) / (1024 * 1024)) / (MAX(b.VALUE) / (1024 * 1024))) * 100 Avail_Pool_Pct FROM V$sgastat a, V$parameter b WHERE (a.Pool = 'shared pool' AND a.NAME NOT IN ('free memory')) AND b.NAME = 'shared_pool_size'; 11、查看用户使用内存情况 SELECT Username, SUM(Sharable_Mem), SUM(Persistent_Mem), SUM(Runtime_Mem) FROM Sys.v_$sqlarea a, Dba_Users b WHERE a.Parsing_User_Id = b.User_Id GROUP BY Username; 12、查看对象的缓存情况 SELECT Owner, Namespace, TYPE, NAME, Sharable_Mem, Loads, Executions, Locks, Pins, Kept FROM V$db_Object_Cache WHERE TYPE NOT IN ('NOT LOADED', 'NON-EXISTENT', 'VIEW', 'TABLE', 'SEQUENCE') AND Executions > 0 AND Loads > 1 AND Kept = 'NO' ORDER BY Owner, Namespace, TYPE, Executions DESC; SELECT TYPE, COUNT(*) FROM V$db_Object_Cache GROUP BY TYPE; 13、查看库缓存命中率 SELECT Namespace, Gets, Gethitratio * 100 Gethitratio, Pins, Pinhitratio * 100 Pinhitratio, Reloads, Invalidations FROM V$librarycache 14、查看某些用户的hash SELECT a.Username, COUNT(b.Hash_Value) Total_Hash, COUNT(b.Hash_Value) - COUNT(UNIQUE(b.Hash_Value)) Same_Hash, (COUNT(UNIQUE(b.Hash_Value)) / COUNT(b.Hash_Value)) * 100 u_Hash_Ratio FROM Dba_Users a, V$sqlarea b WHERE a.User_Id = b.Parsing_User_Id GROUP BY a.Username; 15、查看字典命中率 SELECT (SUM(Getmisses) / SUM(Gets)) Ratio FROM V$rowcache; 16、查看undo段的使用情况 SELECT d.Segment_Name, Extents, Optsize, Shrinks, Aveshrink, Aveactive, d.Status FROM V$rollname n, V$rollstat s, Dba_Rollback_Segs d WHERE d.Segment_Id = n.Usn(+) AND d.Segment_Id = s.Usn(+); 17、求归档日志的切换频率(生产系统可能时间会很长) SELECT Start_Recid, Start_Time, End_Recid, End_Time, Minutes FROM (SELECT Test.*, Rownum AS Rn FROM (SELECT b.Recid Start_Recid, To_Char(b.First_Time, 'yyyy-mm-dd hh24:mi:ss') Start_Time, a.Recid End_Recid, To_Char(a.First_Time, 'yyyy-mm-dd hh24:mi:ss') End_Time, Round(((a.First_Time - b.First_Time) * 24) * 60, 2) Minutes FROM V$log_History a, V$log_History b WHERE a.Recid = b.Recid + 1 AND b.First_Time > SYSDATE - 1 ORDER BY a.First_Time DESC) Test) y WHERE y.Rn < 30 18、求回滚段正在处理的事务 SELECT a.NAME, b.Xacts, c.Sid, c.Serial#, d.Sql_Text FROM V$rollname a, V$rollstat b, V$session c, V$sqltext d, V$transaction e WHERE a.Usn = b.Usn AND b.Usn = e.Xidusn AND c.Taddr = e.Addr AND c.Sql_Address = d.Address AND c.Sql_Hash_Value = d.Hash_Value ORDER BY a.NAME, c.Sid, d.Piece; 19、求某个事务的重做信息(bytes) SELECT s.NAME, m.VALUE FROM V$mystat m, V$statname s WHERE m.Statistic# = s.Statistic# AND s.NAME LIKE '%redo size%'; 20、求cache中缓存超过其5%的对象 SELECT o.Owner, o.Object_Type, o.Object_Name, COUNT(b.Objd) FROM V$bh b, Dba_Objects o WHERE b.Objd = o.Object_Id GROUP BY o.Owner, o.Object_Type, o.Object_Name HAVING COUNT(b.Objd) > (SELECT To_Number(VALUE) * 0.05 FROM V$parameter WHERE NAME = 'db_block_buffers'); 21、求buffer cache中的块信息 SELECT o.Object_Type, Substr(o.Object_Name, 1, 10) Objname, b.Objd, b.Status, COUNT(b.Objd) FROM V$bh b, Dba_Objects o WHERE b.Objd = o.Data_Object_Id AND o.Owner = '&owner' GROUP BY o.Object_Type, o.Object_Name, b.Objd, b.Status; 22、求日志文件的空间使用 SELECT Le.Leseq Current_Log_Sequence#, 100 * Cp.Cpodr_Bno / Le.Lesiz Percentage_Full FROM X$kcccp Cp, X$kccle Le WHERE Le.Leseq = Cp.Cpodr_Seq; 23、求等待中的对象 SELECT /*+rule */ s.Sid, s.Username, w.Event, o.Owner, o.Segment_Name, o.Segment_Type, o.Partition_Name, w.Seconds_In_Wait Seconds, w.State FROM V$session_Wait w, V$session s, Dba_Extents o WHERE w.Event IN (SELECT NAME FROM V$event_Name WHERE Parameter1 = 'file#' AND Parameter2 = 'block#' AND NAME NOT LIKE 'control%') AND o.Owner <> 'sys' AND w.Sid = s.Sid AND w.P1 = o.File_Id AND w.P2 >= o.Block_Id AND w.P2 < o.Block_Id + o.Blocks 24、求当前事务的重做尺寸 SELECT V$statname.NAME,VALUE FROM V$mystat, V$statname WHERE V$mystat.Statistic# = V$statname.Statistic# AND V$statname.NAME = 'redo size'; 25、唤醒smon去清除临时段 column pid new_value Smon set termout off SELECT p.Pid FROM Sys.v_$bgprocess b, Sys.v_$process p WHERE b.NAME = 'SMON' AND p.Addr = b.Paddr; / SET Termout ON Oradebug Wakeup &Smon Undefine Smon 26、求回退率 SELECT b.VALUE / (a.VALUE + b.VALUE), a.VALUE, b.VALUE FROM V$sysstat a, V$sysstat b WHERE a.Statistic# = 4 AND b.Statistic# = 5; 27、求free memory SELECT * FROM V$sgastat WHERE NAME = 'free memory'; SELECT a.NAME, SUM(b.VALUE) FROM V$statname a, V$sesstat b WHERE a.Statistic# = b.Statistic# GROUP BY a.NAME; 查看一下谁在使用那个可以得回滚段,或者查看一下某个可以得用户在使用回滚段, 找出领回滚段不断增长的事务,再看看如何处理它,是否可以将它commit,再不行 就看看能否kill它,等等, 查看当前正在使用的回滚段的用户信息和回滚段信息: set linesize 121 SELECT r.NAME "ROLLBACK SEGMENT NAME ", l.Sid "ORACLE PID", p.Spid "SYSTEM PID ", s.Username "ORACLE USERNAME" FROM V$lock l, V$process p, V$rollname r, V$session s WHERE l.Sid = p.Pid(+) AND s.Sid = l.Sid AND Trunc(l.Id1(+) / 65536) = r.Usn AND l.TYPE(+) = 'TX' AND l.Lmode(+) = 6 ORDER BY r.NAME; 28、查看用户的回滚段的信息 SELECT s.Username, Rn.NAME FROM V$session s, V$transaction t, V$rollstat r, V$rollname Rn WHERE s.Saddr = t.Ses_Addr AND t.Xidusn = r.Usn AND r.Usn = Rn.Usn 29、查看内存中存的使用 SELECT Decode(Greatest(CLASS, 10), 10, Decode(CLASS, 1, 'Data', 2, 'Sort', 4, 'Header', To_Char(CLASS)), 'Rollback') "Class", SUM(Decode(Bitand(Flag, 1), 1, 0, 1)) "Not Dirty", SUM(Decode(Bitand(Flag, 1), 1, 1, 0)) "Dirty", SUM(Dirty_Queue) "On Dirty", COUNT(*) "Total" FROM X$bh GROUP BY Decode(Greatest(CLASS, 10), 10, Decode(CLASS, 1, 'Data', 2, 'Sort', 4, 'Header', To_Char(CLASS)), 'Rollback');
󰈣󰈤
 
 
>>返回首页<<
 为你推荐
 
 
 
 转载本文
 UBB代码 HTML代码
复制到剪贴板...
 
 
 热帖排行
 
 
王朝网络微信公众号
微信扫码关注本站公众号wangchaonetcn
 
  免责声明:本文仅代表作者个人观点,与王朝网络无关。王朝网络登载此文出于传递更多信息之目的,并不意味着赞同其观点或证实其描述,其原创性以及文中陈述文字和内容未经本站证实,对本文以及其中全部或者部分内容、文字的真实性、完整性、及时性本站不作任何保证或承诺,请读者仅作参考,并请自行核实相关内容。
 
 
©2005- 王朝网络 版权所有